Shoe-filling machine



March 7, 1933. A. AVERY SHOE FILLING MACHINE Filed Feb. 20, 1931 5Sheets-Sheet l March 7, 1933. A H AVERY 1,900,323

SHOE FILLING MACHINE Filed Feb. 20; 1931 5 Sheets-Sheet 2 March 7, 1933.A, AVERY SHOE FILLING MACHINE Filed Feb. 20, 1951 5 Sheets-Sheet 3 l I lMarch 7, 1933.

A. H. AVERY SHOE FILLING MACHINE Filed Feb. 20 195 5 Sheets-Sheet 4March 7, 1933. A. AVERY snos FILLING MACHINE Filed Feb. 20, 1951 5Sheets-Sheet 5 Fig. 6.

NIILIIII\II% Patented Mar. 7, 1933 gnn rsn STATES "PATENT emu;

ALFRED II. AVERY, OF MALDEN, MASSACHUSETTS, ASSIG-NOR TO NORTH AMERICANCHEMICAL COMPANY, OF CAMBRIDGE, MASSACHUSETTS, A CORPORATION OF MASSA-CHUSETTS SHOE-FILLING- MACHINE Application filed February 20, 1931.

This invention relates to machines for spreading shoe bottom filler inthe bottom cavities of shoes, and consists in certain improvements uponandmodifications of the shoe bottom filling machine described in myapplication for patent Serial No. 516,862, filed February 19, 1981. J

Formerly shoe filler of the plastic, spread able kind has been spread inthe bottom cavities of shoes by hand. In laying bulk filler, which hasbeen in general use for many years, the operator would dip or scoop aquantity of filler, suitable fora single shoe cavity, by means of a hotspreading knife or spatula out of a larger mass or bulk of filler,usually previously softened and conditioned for spreading.- He wouldthen de posit the segregated quantity of filler in the shoe bottomcavity and spread it by means of the spatula within the cavity in muchthe same manner as a mason lays and spreads mortar; and finally he wouldusually pass a hot roller back and forth over the spread layer tocompress and smooth it. In laying individual, leaf-like pieces ofplastic filler material, which have recently come on the market, hewould follow a similar. proce-' dure, spreading the pro-conditionedfiller piece with the spatula and/or with a roller. This handwork wasextremely laborious owing to the nature of the filler material and wasin many ways unsatisfactory; and it is the object of the presentinvention to provide a machine for more efficiently and expeditiouslyfilling shoes, for spread ing the filler more completelythroughout thecavity, making a more. uniform filler layer and compacting andcompressing the layer more firmly, for simultaneously fiatening the weltseam and leveling thewelt and the entire shoe bottom, and generallyproducing filled shoes superior to those pro, duced by previous methods.

Important novel features of the present invention consist in thevibrating pressing and spreading member; and in the automatic startingand stopping of the press operating mechanism by the insertion andremoval of the shoe being operated upon. These and other features willbe herein more fully Serial N 0. 517,237.

described and particularly pointed out in the claims. a

In the accompanying drawings,

'Fig. l is a side elevation of a shoe bottom filling machine embodyingthe invention;

Fig. 2 is a plan View of the machine; Fig. 3 is a partial section online 33 of Fig. 2;

Fig. 4 is Fig.1;

Fig. 5 is a plan view of the heated shelf a partial section on line M offor holding a supply of shoe filler; and

rier, for a heated pressing and spreading member indicated generally at20. The pressing and spreadingmember is a flexible, slightly bowed padconstructed as more fully described in my said application Serial N 0.516,862.

To the upper end of the stem or spindle 68 is fixed the hub of alaterally extending arm 70, connected by a pitman 71 with an eccentric72, fast on a transverse shaft 73, on which is also fixed a worm gear74.

Worm gear '74,- is continuously driven by a worm 75, (F 2) fast on thearmature shaft of an electric motor M, fixed in position uponthe top ofthe frame 1.

I Through. the mechanism just described.

the pad is continuously oscillated or vibrated on a vertical axis whilethe machine is in use, therebyimparting to the working face of the pad20 a vibration of partial r0- tation in a plane transverse to thedirection of pressure. This materially assists in the proper spreading,distribution and leveling of the filler material while the shoe is heldpressed against the pad "20, as hereinafter described.

ed a block 81. llloclr ber 88 toward the clutch member 86 During theoperation of spreading the filler material in the bottom cavity of ashoe, the shoe is moved upwzn'dly by the shoe support so that the bottomof its forepart and the bottom of its welt are forcibly pressed againstthe bottom plate 58 of the hot pressing and spreading pad 20, as shownin Fig. 1. The filler material which has been deposited in the bottomcavity of said forepart is thereby spread and leveled and at the sametime the filler is subjected to heat treatment by the hot pad.

The shoe support comprises a swinging frame or body member 76, which ispivotally supported by a crossrod 77 fixed at its ends to the machineframe 1. The swinging frame 7 6 is provided with an arm 7 8 to which theforward end of a connecting rod 79 is'pivotally connected. At its rearend the connecting rod 79 is provided with a slideway 80, within whichis slidably mount- 81 is carried upon a part of an intermittentlyoperated shaft 83. A spring 84; disposed between the block 81 and anadjustabl abutment screw 85 the rear end of the slideway 80 yieldinglyopposes rearward movementof the block 81 relatively to the connectingrod 79.

Loosely mounted on the shaft 83 is a gear 86 (Figs. 1, 2 and 4;) whichis continuously driven by a pinion 87 fast on the shaft 73. This 86 hasone side made as a clutch member 86 to cooperate with a complementaryclutch member 88 (Fig. l) splined to, but movable axially on, the shaft83. A spring 89 yieldingly urges the clutch memof the crank 82 formigear86.

' The clutch member 88'is provided with a racially projecting stud orroll 90 to coopcrate with a shipper member 91, which is pivotallymounted at 92 on the frame of the machine.

,When the shipper member 91 is held in its retracted and inoperativeposition, illustrated in l and 4;, the spring89 holds the clutch member88 in engagement with the clutch 86ton gear so that the crank 82 ofshaft 83 operates through the connecting rod 79 to rock or reciprocatethe swinging. frame 7 6 on the cross-rod 77. When the shipper member 91is permitted vto swing from the position indicated. by

dotted lines in Fig. 1 into its operative position where it is close toor rests against the periphery of i the clutch member 88, while thelatter is rotating in the direction indicated by the arrow in Fig. 1,the roll or stud 90 on said clutch member wi ride up on to the camportion 91 of shipper member 91 and come rest against a stop shoulder 91on the shipper member, thereby disengaging the clutch member 88 from theclutch gear 86 and stopping further oscillation of the body member 7 6.The stud or roll 90 thus engages the stop shoulder 91 at a moment whenthe connecting rod 79 is at the limit of its movement in the directionof the swinging frai 1e 7 6.

It will also be clear that when the shipper member 91 is moved to itsinoperative position against a stop screw 98, the spring 89 will returnthe clutch member 88 into engagement with the clutch 86 and theoperation of the body member 76 will be resumed and continue until theshipper member 91 is again returned to its operative position.

Supported by and lixed upon swinging frame 76 are two spindles 94 (Figs.1 and 1) to the lower end of each of which is secured an arm 95. Tl esetwo arms embrace a block 96, which is provided atits opposite sides withtrunnions 97, immovably clamped within bearings provided on the arms 95by means. of cap plates 98 and screws 99.

The block 96 is made with a central threaded hole to receive thethreaded stem 100 of a toe res 101, which is provided at its upper endwith a crotch to support the forepart of a shoe S, as shown in Fig. 1.This crotch is preferably covered with a layer of cushioning materialsuch as rubber.

Upon the threaded stem 100 is mounted a hand-wheel nut 102 by means ofwhich the stem is locked in adjusted position. 3y loosening thenut-wheel 109 and rotating stem 100 the latter may be adjustedvertically as required by the shoe being operated upon. Also, the capplates 98 and screws 99 provide for adjusting the stem 100 angularly onthe trunnions 97 as may be required to fit the shoe support to the shoethat is being operated upon.

adjacent its inner end with an arcuate slot 48, concentric with thepivot 46, to receive a screw 19 carried by arm 10. This screw serves tohold the laterally movable end of the plate 45 against the top of itsarm without interfering with the movements of tue plate on its pivot 48under the influence of spring 4-7 or of the shoe.

The inner edge of each wel" su sporting plate 45 is beveled or undercutso as to en able the same to fit closely into the seam crease betweenthe welt and the upper of the shoe; and the welt engaging edge of i alsocarries a tailpiece 104 which'extends downwardly to cooperate with aroll 105 carried by an arm 106 fast on arock shaft 107. This rock'shaft1 07 has fast on it another arm 108 connected by alink' 109 with theshipper member 91. l/Vhen there is no shoe upon the shoe support theweight of the shipper member 91,

assisted if desired by a spring, holds said shipper member at the limitof its-movement toward the clutch member 88 with the upper arm of lever104 inclined forwardly into the path of the shoe, as shown by dottedlines in Fig. 3. With the parts in these positions, the shoe support isat. rest because of the engagement of the shipper member 91 with thestud or roll 90 of clutch member 88.

When a shoe, upon the forepart of which a quantity of filler materialhas been deposited, is slid endwise and toe first into position betweenthe arms 40, while the shoe support occupies the position shownin Fig.3, the shoe acts through the trip lever 104, tailpiece 104 stud or roll105, arm 106, rock shaft 107, arm 10S and link 109 to retract shippermember 91, whereupon'the clutch 88 is thrown in and the operation of theshoe support is automatically started. Whenthe shoe S is fully inposition upon the shoe support, the curved portion of the tailpiece 104of lever 104, which is in engagement with the roll 105, is approximatelyconcentric with the axis of pivot rod 77, so that the reciprocatingmovements imparted to the shoe support do not disturb the position ofthe shipper member 91. v v

It will be understood of course that when the shoe is shoved intoposition on'the shoe support as described, the beveled inner edges ofthe plates are pressed by the spring 47 closely into the seam crease ofthe shoe so that substantially the entire'overhanging welt rests uponand is supported by said plates when the shoe is forcibly pressedagainst the pad 20. In this way, not only is the filler material spread,leveled, distributed and evened with respect'to the up standing weltseam, but the component layers of the welt seam are crushed down,compressed and evened, and the welt itself is leveled and evenedsubstantially to the plane of the rest of the shoe bottom.

It is also a feature of the above described construction that theengagement of the welt seam with the bottom plate 58 of the pad 20prevents the filler material from spreading outwardly on to the welt andapertures posited in the bottom cavity of the shoe to be filled, theshoe, still on its last, is shoved pacting the filler throughout theshoe botcompels any surplus material to be displaced or extrudedrearwardly on the shank of the shoe, after the forepart has been filledto its capacity. 'Such surplus material may readily be knocked orscraped off. i

The machine is provided at one side with a shelf-110, which is furnishedupon its under side with heating units 111 and 112 serving to heat theshelf, and particularly the front marginal part thereof, and the supplyof filler material resting thereon. The heating unit lll'extends acrossthe shelf 110 for nearly its full width, while the unit 112 isrelatively shorter and positioned immediately adjacent the outer side ofthe shelf. The heating units are disposed within pockets provided uponthe under side of the shelf and are held within said pockets by means ofasheet metal plate 113 fastened by screws to the shelf. I

Beneath the shorter unit 112 is-arranged a supplemental sheet metalplate 114, forming a knife heater and holder. The plate 114 isyieldingly supported by means'of springs 115 resting at their; lowerends against the heads of screws 116 extending downwardly from shelf 110loosely through provided in plate 114. The front marginal portions ofthe two plates 113 and 114 are-flared'apart to provide an entrance forthe edgewise insertion of the blade of the knife or spatula. I Thefiller material, which lies in bulk on the heated shelf 110, istransferred to the shoe S, before the latter is placed upon the shoesupport, by means of a knife or spatula previously heated in the springpressed holder 114. Inpractice two or more knives i are provided and oneis heating while the other is being used.

In operation, after a measured quantity of filler, or it may be a pieceof filler if the filler'is used in piece form, has been deinto positionbetween the Welt supporting plates 45, 45, with its welt resting on thewelt supporting plates and the forepart of the shoe resting on the toerest 101. WVhen the shoe is pushed fully into position on the supportsthe toe of the shoe will actuate the trip 104, thereby withdrawing theshipper 91, throwing in the clutch and starting the operation of theswinging frame 76. The

frame 76 and the shoe supports carried thereby will force the shoebottom, with its unspread' filler, into pressing and spreadingengagement with the pad- 20, thus spreading, leveling, distributing andcomtom cavity,a'nd at the same time flattening and compressing the weltseam, and evening,

'leveling'and smoothing the entire shoe bot- I tom including the fillerlayer, the welt seam and the welt, as described in my said appli- 1 0 ication Serial No. 516,862; In the present ing or spreading member andthe shoe supmachine however these functions are materially aided by theback and forth partial rotation or vibration of the pad 20 in the planeof the filler layer transverse to the direction of pressure, whichsupplements the spreading, distributing and compressing action of thedirect vertical pressure between the pad 20 and the shoe supports. henthe swinging frame 76 descends after the'spreading operation, theoperator pulls the shoe out from its supports, thereby releasing trip104, which permits the shipper 91 to throw out the clutch 88 and sobrings the swinging frame to rest in open position ready to receiveanother shoe upon the shoe supports.

I claim:

1. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, means to impart relative movement between thepressing and spreading member and the shoe support toward and from eachother, and means to vibrate the pressing and spreading member in a planetransverse to the direction of pressure during its operation on the shoebottom.

2. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, means to impart relative movement between thepressing and spreading member and the shoe support toward and from eachother, and means to impart to the pressing and spreading member avibration of rotation in a plane transverse to the direction of pressureduring its operation on the shoe bottom.

3. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, means to impart relative movement between thepressing and spreading member and the shoe support toward and from eachother, and means to impart to the pressing and spreading member avibration of partial rotation on an axis substantially parallel to thedirection of pressure, thereby to vibrate the working face of saidmember in a plane transverse to the direction of pressure during itsoperation on the shoe bottom.

4:. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, means to impart relative movement between'thepressing and spreading member and the shoe support toward and from eachother, a spindle, to which the pressing and spreading member isattached, mounted on the machine frame on an axis substantially parallelto the direction of pressure, and means to impart to said spindle avibration of partial rotation.

5. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, operating mechanism to impart relative movementbetween the pressport toward and from each other, and mechanismcontrolled by a shoe when placed in position upon and when removed fromsaid shoe support for starting and stopping said operating mechanism.

6. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, operating mechanism to impart relative movementbetween the pressing and spreading member and the shoe support towardand from each other, mechanism for starting and stopping said operatingmechanism, and a trip in the path of and actuated by a shoe when placedin position upon and when removed from said shoe support for controllingthe starting and stopping mechanism.

7. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, operating mechanism to impart relative movementbetween the pressing and spreading member and the shoe support towardand from each other, mechanism for starting and stopping said operatinmechanism, a trip in the path of and actuated by a shoe when placed inposition upon and when removed from said shoe support for controllingthe starting and stopping mechanism, and connections between the tripand the starting and stopping mechanism so organized and arranged thatwhile the trip is engaged by a shoe in position on the shoe support, thestarting and. stopping mechanism will be held in position to permit theoperating mechanism to con tinue to operate notwithstanding the relativemovement between the shoe support and the pressing and spreading member.

8. A shoe bottom filling machine comprising a pressing and spreadingmember, a swinging frame journaled on the frame of the machine, a shoesupport carried by the swinging frame, operating mechanism to move theswinging frame and shoe support toward and from the pressing andspreading member, mechanism for starting and stopping the operatingmechanism, a trip carried by the swinging frame and located in the pathof and actuated by a shoe when placed in position upon and when removedfrom said shoe support for controlling the starting and stoppingmechanism, and connections between the trip and the starting and stoppinmechanism adapted in all positions of the swinging frame, while the tripis engaged by a shoe in position on the shoe support, to hold thestarting and stopping mechanism in position to permit the operatingmechanism to continue to operate.

9. A shoe bottom filling machine comprising a pressing and spreadingmember, a pair of welt supporting members adapted to engage underneaththe welt of a shoe along the seam crease between the welt and the upper,operating mechanism to impart relative movement between the pressing andspreading member andthe welt supporting members toward and from eachother, mechanism for starting and stopping said operating mechanism, anda trip located between the welt supporting members adapted to beactuated by the toe of a shoe when inserted between and when removedfrom said welt supporting members for controlling the starting andstopping mechanism.

10. A shoe bottom filling machine comprising a pressing and spreadingmember, a pair of welt supporting members adapted to engage underneaththe welt of a shoe along the seam crease between the welt and the upper,a toe rest between and below the welt supporting members adapted tosupport the forepart of the shoe, operating mechanism to impart relativemovement between the pressing and spreading member and the shoesupporting members toward and from each other, mechanism for startingand stopping said operating mechanism,

and a trip located behind the toe rest and between the welt supportingmembers adapted to be actuated by the toe of a shoe when insertedbetween and when removed from said welt supporting members forcontrolling the starting and stopping mechanism. g

11. In a machine for operating on a shoe, a shoe support, and anadjustable mounting therefor comprising a frame, a block journaled on ahorizontal axis on the frame, and

a stem vertically adjustable on the block and carrying a shoe rest atits upper end, whereby the shoe rest and stem may be adjusted bothangularly and vertically.

12. A shoe bottom filling machine comprising a pressing and spreadingmember, a shoe support, means to impart relative movement between thepressing and spreading member and the shoe support toward and from eachother, and means to impart relative movement between the pressing andspreading member and the shoe support in a plane transverse to thedirection of pressure during the operation of said member on the shoebottom. I

Signed by me at Boston, Massachusetts this seventeenth day of February,1931. ALFRED H. AVERY.

